package com.paul.wechat.utils;

import com.alibaba.fastjson.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import java.io.*;
import java.net.ConnectException;
import java.net.URL;

/**
 * @description：
 * @author：JBL
 * @date：2018/1/4
 */

public class HttpsUtils {
    private static Logger log = LoggerFactory.getLogger( HttpsUtils.class );


    /**
     * post请求
     * @param requestUrl
     * @param outputStr
     * @return
     */
    public static JSONObject post(String requestUrl, String outputStr) {
        return httpsRequest( requestUrl, "POST", outputStr );
    }

    /**
     * get请求
     * @param requestUrl
     * @return
     */
    public static JSONObject get(String requestUrl) {
        return httpsRequest( requestUrl, "GET", null );
    }


    /**
     * 发送https请求
     * @param requestUrl    请求地址
     * @param requestMethod 请求方式（GET、POST）
     * @param outputStr     提交的数据
     * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
     */
    public static JSONObject httpsRequest(String requestUrl, String requestMethod, String outputStr) {
        JSONObject jsonObject = null;
        try {
            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = {new HtttpsTrustManager()};
            SSLContext sslContext = SSLContext.getInstance( "SSL", "SunJSSE" );
            sslContext.init( null, tm, new java.security.SecureRandom() );
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();

            URL url = new URL( requestUrl );
            HttpsURLConnection conn = (HttpsURLConnection) url.openConnection();
            conn.setSSLSocketFactory( ssf );

            conn.setDoOutput( true );
            conn.setDoInput( true );
            conn.setUseCaches( false );
            // 设置请求方式（GET/POST）
            conn.setRequestMethod( requestMethod );

            // 当outputStr不为null时向输出流写数据
            if (null != outputStr) {
                OutputStream outputStream = conn.getOutputStream();
                // 注意编码格式
                outputStream.write( outputStr.getBytes( "UTF-8" ) );
                outputStream.close();
            }

            // 从输入流读取返回内容
            InputStream inputStream = conn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader( inputStream, "utf-8" );
            BufferedReader bufferedReader = new BufferedReader( inputStreamReader );
            String str = null;
            StringBuffer buffer = new StringBuffer();
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append( str );
            }
            // 释放资源
            bufferedReader.close();
            inputStreamReader.close();
            inputStream.close();
            conn.disconnect();
            jsonObject = JSONObject.parseObject( buffer.toString() );
        } catch (ConnectException ce) {
            log.error( "连接超时：{}", ce );
        } catch (Exception e) {
            log.error( "https请求异常：{}", e );
        }
        return jsonObject;
    }

    /**
     * 获取接口访问凭证
     *
     * @param appid 凭证
     * @param appsecret 密钥
     * @return
     */
   /* public static Token getToken(String appid, String appsecret) {
        Token token = null;
        String requestUrl = token_url.replace("APPID", appid).replace("APPSECRET", appsecret);
        // 发起GET请求获取凭证
        JSONObject jsonObject = httpsRequest(requestUrl, "GET", null);

        if (null != jsonObject) {
            try {
                token = new Token();
                token.setAccessToken(jsonObject.getString("access_token"));
                token.setExpiresIn(jsonObject.getInt("expires_in"));
            } catch (JSONException e) {
                token = null;
                // 获取token失败
                log.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
            }
        }
        return token;
    }*/

    /**
     * URL编码（utf-8）
     *
     * @param source
     * @return
     */
    public static String urlEncodeUTF8(String source) {
        String result = source;
        try {
            result = java.net.URLEncoder.encode( source, "utf-8" );
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return result;
    }

    /**
     * 根据内容类型判断文件扩展名
     *
     * @param contentType 内容类型
     * @return
     */
    public static String getFileExt(String contentType) {
        String fileExt = "";
        if ("image/jpeg".equals( contentType )) {
            fileExt = ".jpg";
        } else if ("audio/mpeg".equals( contentType )) {
            fileExt = ".mp3";
        } else if ("audio/amr".equals( contentType )) {
            fileExt = ".amr";
        } else if ("video/mp4".equals( contentType )) {
            fileExt = ".mp4";
        } else if ("video/mpeg4".equals( contentType )) {
            fileExt = ".mp4";
        }
        return fileExt;
    }
}
